I am going to put some ET streets on tomorrow since I will be racing the car on Saturday. I will have to drive on them to the track and back. (40 miles one way) What PSI should I set them to for driving? What about drag? The car is an automatic, full weight, 2400 stall, 355 RWHP.
Thanks.

 

I set my M/Ts at 32 PSI for the trip down then drop them to about 15 psi for the race.

 

Thanks Perry.
Do you launch yours from idle?

 

28-32 for driving.
13.5 for racing.

I do not recommend using them on the street. The manufacturer does not recommend using them on the street. They will wear out very quickly on the street. They puncture very easily. They will pick up every rock and pebble and throw it into the air all around you. The oils will come to the surface and they will dry out. Also, they are intended for tubes as they tend to lose air without them. I had to use rim screws with mine as they would turn on the launch.

If there is the slightest hint of moisture get off the road. At 25mph they will hydroplane to the point where the backend will come around on you. Drive the corners as if you were driving a stretch limo because the sidewalls are very thin and they can roll off the rims.

That said, I have driven to and from the local track a couple of times. I had two flats the two times I tried it and have not gone back for a third experience. With no back seat I can fit one ET street in the back and another one flat on the rear deck and I change them when I get to the track. Your experience, hopefully, will vary from mine.

I launch my car off idle so the torque converter hits fairly hard.

You probably want to inflate your front tires to 40-42 pounds to reduce rolling resistance. If you bulb, then drop back to 35 pounds or so in front.

 

we drive about 15miles so we keep ours on 25-28 psi on the street

but at the track no more than 12psi but then again we run 10s all day long

 

Wow, the flat tires surprise me. I have had my set of ET Streets for two years now and put over 2,000 ,iles of street use on them with no incidents. I have no tubes and they do not lose any air. In fact, they have the exact same psi every summer after I leave them off all winter! I consider myself lucky, I guess

 

Just make sure you don't hit any water on that road trip. I had a bad experience once. I'll just say........Lock to lock x 2

 

I wouldn't drive them on the street. You can fit them in the car if you are creative and change them over at the track. That's what I used to do. I trailer the car to the track now, unless I am feeling like running on the street tires.

Rich